Now, some of you might be feeling quite smug, and you may already know what this tiny symbol means. But, for those of you that don’t (admittedly half of the HB office, who presumed it was something to do with ml), this little jar with a floating lid actually signals how long you can use your product for, once you’ve opened it… I know right, mind blown! So, if it reads 12M that means you’ve got a whole year to enjoy your product – usually lipsticks, blushes, eyeshadows, and foundation will be anywhere in this expiration region, or perhaps even up to 24M. Skincare products with active ingredients could be anywhere from 3M to 6M – so now you know, it’s really worth checking. Especially if like the HB team, you’re prone to hauling beauty products.